Book support device



FIG. 1 is a perspective view from above of a book support device in accordance with our design;

FIG. 2 is a front view of the book support device in accordance with our design;

FIG. 3 is a rear view of the book support device in accordance with our design;

FIG. 4 is a top plan view of the book support device in accordance with our design;

FIG. 5 is a bottom plan view of the book support device in accordance with our design;

FIG. 6 is a side view of the book support device in accordance with our design; and,

FIG. 7 is an opposite side view of the book support device from that shown in FIG. 6 in accordance with our design.

The broken lines showing features on the bottom are included for the purpose of illustrating environment and form no part of the claimed design.

The stippling shown on the bands in FIGS. 1, 4, 6, and 7 represents a surface texture and is part of the claimed design. 

The ornamental design for the book support device, as shown and described. 